Electric signal for weighing-scales.



8. J. DERBES.

ELECTRIC SIGNAL FOR WEIGHING SCALES.

' APPLICATION FILED NOV. 28. 1905.

illly g I E Mt. I l 1 m W TNESSES: INVENTOR A TTOH/VE YS PATENTED OCT.16, 1906.

UNITED STATES PATENT OFFI E. STEPHEN JOSEPH DERBES, OF NEw'oRLE ns,Louisiana ELECTRIC SIGNAL son WEIGHINIG-SCVALESL:

Specification of Letters Patent. Applicption and November 28,1905.stemming-9'21 f f rammed Oct. 16, 1906.

To all whom it concern:

Be it' known that I, STEPHEN JOSEPH DERBES, a citizen of the UnitedStates, and a resident of New Orleans, in the parish of Orleans andState of Louisiana, have invented a new and Improved Electric Signal for-W'eighing-'Scales, of which the following is a full, clear, and exactdescription. Z. This invention relates to signals; and 1t consists,substantially, in the details of construction and combinations of artshereinafter more particularly describe and pointed out in the claims.

The invention has reference more especiall to electric alarm-signals forassociation wit some part of a weighing scale or machine to be operatedby the scale-beam for indicating to a salesman or other attendant of astore or other establishment that goods being weighed on the scale are aroachin the weight at which a balance wi e established therebetween andthe poise or poises on the scale-beam.

One of the principal objects of the inventionis to PIOVldG an electricalarm-signal for the purpose named which is simple in con- 'structionand com aratively inexpensive to ity for long and repeate manufacture,besi es being effective and reliable in operation and (possessing thecapacservice.

" The above and additional objects are at- {tained by meanssubstantially such as are illlililstlpated 1n the accompanying drawings,in

Figure 1 is a side view of the upper portion of a weighing-scale havingmy improvements applied thereto. Fig. 2 is an enlarged transversesectional view on the line 2 2 of Fig. 1

.' and showing the battery, bell, and electric 'poise 10.

the bell to ring in' the manner plained,

The device, further comprises an electric battery and an electriccircuit in which the alarm-bell is included, the said special meanssecond above referred to being also included in the circuit andconstituting practo be extically a switch for opening and closing thesame. g 7

Reference being had to the drawings by the designating charactersthereon, 1 represents theshelf or upper part of an ordinaryweighingiscale, centrall of whichis a post 2 by whic the arm 3 o thescale-beam (is pivotally supported at 5 in the usual manner, said shelfbeing formed at one end thereof with a guard 6, in which works thecurved end 7 of the scale-beam, to which is sus-- pended at 8 thebalancing-poise 9 and on wh ch is carried the usual slidable indicating-My improved electric alarm-signal comprises a stri 11 of wood or otherinsulating material lai across the upper surface of the said shelf 1 ofthe weighing-scale, one end of the said strip being flush with one sideof the shelf and the other end thereof projecting slightly beyond theother side of the shelfas indicated at 12, for instance. Applied to thestrip 11 at the last-mentioned end thereof is an angle-plate 13, thehorizontal mem ber 14 of which rests in contact with the upper side ofthe strip and is secured to the latter' in any suitable wa as by meansof screws 15. The verticai member 16 of the said angle-plate 13 issecured to the'projecting end 12 of the strip 11, also by means ofscrews 17, the said member being provided with t holder 18 for avertically-disposed electric contact member 19, having the upper endthereof bent into the form of a hook 120, said contact member beingadjustably held in said holder by means of a set-screw 21, it beingmentioned. that the holder is secured to the said vertical member 16 ofthe angle-plate 13 in any suitable way,as by means of a binding-screw22, extending through the member 1.6 from the inner side thcrof, asshown in Fig; 2.

' The shelf. is provided at the side thereof, adjacent tothe member 16of the angle-plate 13, with a plate or disk 23, of insulating mate- Astrip 11 and'is secured thereto by means ofv screws 26 and the verticalmember 27 of which fits close to the adjacent side of the shelf 1, beingsecured to the end of thestrip 11 b' means of screws 28 or in any othersuita le way. This vertical member 27 of the angle-plate 24 is alsoprovided with a holder 29 for the vertical portion 30 of anotherelectric contact member 30*, comprisingalso an integral horizontal sprinor elastic portion. 31, extending across t e shelf 1 at a suitableheight above the angleplate referred to, with the free end portionthereof located within the bill of the hook 20 and normally held ormaintained out of electric contact with said hook bythe Weight of thearm 3 of the scale-beam, which rests thereon, as indicated in ig. 2. Thesaid vertical portion 30 of the second-mentioned contact member isadjustably held within its holder by means of a setscrew 32, this holderbeing secured to the member27 of the an le-plate 24 by means of v ascrew 33. A suita le electric battery 34 is employed, the same beinglocated in an desired position with reference to the shel 1 of theweighing-scale, and connecting with one pole thereof is one end of anelectric conductor 35, theother end of which is secured to the holder 29for the second above-mentioned contact member. Connectin with the otherpole of said battery is one end of a short conductor 36, the other end:of which. is in elec trical connection at 37 which a binding-screw onan alarm-bell 38, While connectingwith another bindin -screw 39 on thealarm-bell is one end of anot er electric conductor 40, the other end ofwhich is held inelectric contact with the holder 18 for the contactmember 19 by means of the said mentioned bindingscrew 22. In this way anormally open elec tric circuit is derived; but as soon as the arm 3 ofthe scale-beam is caused to move upwardly the slightest extent theinherent resiliencyof the horizontal portion 31 of the contact member30' immediately carries the free end of said portion into contact withthe hook 20 of the contact memberllg, thereb closing the circuit andcausing the alarm-be l iPO ring in an obvious manner.

1 From the foregoing itwill be seen that wh n the weighing-scale is notin use the weightipf the arm 3 will maintain the horiztintal pprtion 31of the contact member 30 i. v

out of electrical contact with the hookv20 of the contact member 19,-andthis relation will 6 5 be also maintained until the scale-beam is causedfirst to rise'b the scales to be weigh the operator or attendantweighing thegoods that the Wei ht of the goods is approachi'n that atwhic a balance will be esta'blishe between the same and the poise orpoises on the scale-beam. v

Having thus described my invention, I claim as new and desire to secureby Letters Patent L In a weighing-scale provided with a shelf, thecombination with the scale-beam, of an insulating-strip appliedto theshelf, rods adjustably connected with the'strip, one

of said rods-terminating in a hook, and the other having a horizontalresilient portion extending beneath the scale-beam, and projectingWithin the hook, and an' electric circuit including a signal having itsterminals in the rods.

2. In a weighing-scale provided with a.-

shelf, the combination with the scale-beam, of an insulating-stripapplied to the shelf, angle-plates having horizontal members secured .tothe strip, and vertical members projecting downwardl' therefrom, one ofsaid vertical members eing insulated from the shelf, anelectric'circuit. including. an alarm having its terminals connectedwith 'the angle-plates, and means whereby the move ment of thescale-'beam.may act upon the terminals to close the circuit.

3. In a weighing-scale, provided with a shelf, the combination withthescale-bea'm, of a strip of insulatin materialapplied to the shelf andprojecting% at one of its ends, angle-plates secured to vsaid strip atits ends, having vertical mem-u bers disposed on the sides of the shelf,astrip of insulating material between one of said vertical members andthe shelf, an electnc battery, an electric circuit,including an alarm-.bell therein,-and having terminalssupported by the angle-plates, one ofwhich comprises a hook, and the other avhorizontal resilient portion,normally held under tension' by Weight of the scale-beam thereon, thefree findkof which portion ,projects, within said an alarm-bell therein,and having terminals the anglelates, one of which supported b hook, andt eother a horizontal comprises a eyond the side thereof I I .115 4. Ina weighing-scale, provided with a shelf, the combination with thescale-beam,

the lacing of goods on ed, t us giving notice to resilient portionnormally held tinder tension by weight oi the scale-beam thereon, thefree end of which portion projects within said hook, the vertical memberof onepf the angleplates being provided with fastening-screws thereforto said shelf, and the latter having an insulatinglate, against whichthe ends of said screws ear.

In testimony whereof I have signed my name to this specification in thepresence of 10 two subscribing witnesses.

STEPHEN JOSEPH DERBES.

Witnesses:

J. H. FoRoELLE, Jr., J. B. LAPLACE.

